#admin_nav{
    float:right;
    font-weight: bold;
}
#admin_nav ul li
{
    float: left;
    list-style: none;
    padding: 5px 15px 5px 15px;
}
#container{
    width: 80%;
    margin: 0px auto 0px auto;
}
.top-bar .index-page {}
.top-bar .night-style {}
.top-bar .search-page {}
.top-bar .setting-page {}
.top-bar .current-user {}
.top-bar .logout-btn {}
.top-bar .login-btn {}
.top-bar .register-btn {}
/* layout */
@media print, screen and (max-width: 800px){
    .top-bar .night-style {display:none;}
    .top-bar .search-page {display:none;}
    #container{
        width: 100%;
    }
}
